My noble friend, as always, goes to the heart of the matter. I completely agree that viewers should be able to understand dialogue as they first view a programme. I am clear that this is a matter that the BBC takes seriously, and it has issued new guidelines as recently as December 2016. To put things in perspective, though, the BBC makes 22,000 hours of new programmes every year, so since 2014—the year to which my noble friend referred—that is 66,000 hours of new material, and I think there have been audibility problems with six programmes.
My Lords, while I partly agree with the noble Lord, Lord Naseby, that some producers, in pursuit of authenticity, insist that people mumble, usually in indecipherable regional accents as well, does the Minister agree that the main problem lies with the design of modern television sets? Thin LED television sets have very poor sound systems. I must confess that in my own case, although obviously not in the case of somebody as young as the noble Lord, Lord Naseby, advancing years tend to have something to do with turning up the volume.
My Lords, the noble Lord is exactly right. There are many reasons why audibility could be a problem. However, the fact is that it is the responsibility of broadcasters to produce programmes that are audible under normal conditions, and they always try to do that. At the end of the day, no broadcaster wants to make programmes that people cannot hear.